Bobeson b



` n. B. woLcoTT. INCANDESCENT ELECTRIC LAMP SOCKET. APPLICATION FILED MAY I3. |916.

1 ,B22-,989. Patented Nov, 25, 1919.

lparrain srA'rns PATENT ortica.

. ARIOBTEUSON B. WOLCOTT, OF CLEVELAND,-OHIO, ASSIGNOR. T0 THE CHASE COMPANIES,

INC., 0F WATERBURY, CONNECTICUT. v y

INCANDEscnNrEtncTa1cLAMr SOCKET.

To all whom t may concern.'

Be it known that I, RonssoN B. WoLco'r'r, -a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and 5 lState of Ohio have invented certain new and useful Improvements in Incandescent- Electric-Lamp Sockets, of which the followino is a specification.

y invention has for its object the provision Aof'a lamp socket, in which the shell or body portion, constitutingr the lamp support, is composed entirely of insulation divided longitudinally into`two complementa] parts with means for holding the parts together. Another object of my invention is to pro vide a socket which may be quickly and securely wired. Another object of my invention is to provide a socket in which the number-0f metal parts and the weight of the metal employed shall be a minimum, and in which all of the metalparts, with the eX- ception ofthe means employed for securing the two halvesof the shell or body together, are those. which are necessary lfor makin contact with the lam terminals, and with the conductors to whlch rthe lampsocketis connected.

Still another object of myi invention is to provide a mechanically strong and electrically safe socket whichv may be manufacg tured `at low cost, and employ the least amount of material consistent with such mechanical stren and electric safety.l Referring to t e drawings which accompany these specifications, Flgure vlis a side elevation of one of my improved sockets. 'V

Fig. '2 is an interior view of one of the halves of the shell or body portion whichis made entirely of insulation, and Fig.`3 isan interior view of the other half ofthe .shell or body portion which is -suitably recessed for the receptioii of the metal contact memv bers of the'socket. Fig. Y4 fis a section on line :lV-1V, of

Figi.

Fig. 5 s a sectional yiew similar to Fig. 4,

Y with the exception that in Fig. 5 the dowel pins are mol ed integrally with the shell body, whereasin Fig. 4 they are shown 'as vseparate members secured in the shell.

. Specification of Letters Patent. I Patented Nov. 1919. Application led May 13, I1916. Serial No. 97,310.

Fig. Gis a section online, V'I-YL of l Fig. l.

- Figs. 7 and 8 are views of the detached metal contact members.

Fig. 9 is a section similar to that shown in Fig. 6 showing the heads of the binding post screws entering holes in th'e opposite half of the shell,.and serving as dowel pins to hold-the two halves of the shell in alinement. .Y

Referring to the form of socket shown in the drawings, 1 represents a half of the shell or .body men'xher which receives the metal I Contact members. 2 is the opposite or cover half of theY shell or body member. It will be observed that both halves, l and 2, are capable of being molded independently of each other, and that when placed together the various apertures will registeriproperl I3 is the metal contact member which con ucts current to the shell or threaded .portion of portion, 2, for 'the reception ofthe 'spring fmetal contact member,

v Recesses, 12 and 13, are iormed in the'shell member, 2,- for the reception of the leading-in wires, 7 and 8, and of the binding screws, 5 and 6. Small slots 14 and 15, are formed in the shell member, 2, connecting recesses, 12 YAand 13, with the aperture for the lamp base, for the reception .of portions of the metal` contacts,

`3 and 4. The contact members, 3 and 4, are

made of spring metal such as brass or phoshor bronze and are adapted tomake yielding contact with the lamp lbase terminals.

Contact member 3 is formed so that it stands, normali in the path of the threaded i metalishell of t e lamp base, when a lamp vis being screwed into the socket, and yields outwardly intslot, 11, making electric contact with the lamp base shell as the lamp base enters the socket.

Internal threads, 16, 16, are formed 1n the lamp base aperture of the shell or body portion, those formed in the half member, 1, registering properly with those formed in the half member, 2, when the shell halves are assembled together. 17 isa machine screw which` passes through a hole in the half member, l, and is threaded into a 'corresponding hole in the half member, 2,\for the' purpose of securing the two half-members together as may readily be seen in Fig. 6.

i ber 1 to accommodate half of the thickness.

An aperture 18 is formed inthe half memof the leadingsin wires.

To connect a socket to the conductors ofY a lamp cord, the shell halves are separated .after first removing screw '17. The con- -ductor wires, 7 and 8,l are then secured to the metal contact members, 3 and 4, by means of binding post screws, 5- and 6, which are threaded into the members 3 and 4 respectively. The metal contact members, 3 and 4, maybe secured in the lrecessesformed in the half member 2 by molding them in place, although it is not necessaryto secure them in this way, as, after the wires, 7 and 8, are

attached to them, and the shell, members have been secured together by means ofthe screw, 17, these metal contactpmembers, 3 and 4, are sufficiently secured in place.

p It will be seen that the major portion of my improved socket is composed of insulating material which is particularly desirable not only from the standpoint of electrical safety,`but in the matter ofcost, as lthese insulations can be produced' cheaper than any form of metal, or of combination, metal and insulation, lamp socket shells with' which I am familiar. `It will be seen also that my improved socket comprises few parts, all of which are simple and readily reception of a lamp base -at one end of saidy shell, part of said threaded aperture being formed in each of the two parts of said shell, metal contacts mounted on one of the parts of said shell and projecting into said aperture to make contact with the terminals of an incandescent lamp base when it is screwed into said aperture; and [means for securing the parts of the shell together.

2. In a lsocket for incandescent electric lamps, a shellc'omposed of insulating material divided longitudinally into two complemental parts, a threaded aperture for the reception of a lamp base at one end of said shell, fpart of said threaded aperture being formed in each of the two parts of said shell, metal` contact members "carried by one of the parts of said shell, means for securing electrica-l conductcrs'tov said metal 'contact members, said metal contact mem'- bers'exte'nding into said threaded aperture` and being adapted to make electrical contact withthe; terminals of a lamp base when the lattervisscrewed into said socket.' v

' 4In testimony whereof I aix my signature in presence of .two witnesses.. y. p

y RoBEsoN-B. woLco'rT.

.Witnessesz v i i HERBERT W. Woncor'r,

l .L ERANCES K. MANN. Y 

